All assignees
95 prefixes in 557 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 557-200 | LADUE | 093F | 2022-08-08 | Yes |
| 557-201 | KIRKWOOD | 7218 | 2023-04-14 | Yes |
| 557-202 | ST LOUIS | 318J | 2023-03-27 | Yes |
| 557-203 | MEHLVILLE | 6529 | 2023-05-19 | Yes |
| 557-204 | ST LOUIS | 598J | 2023-05-22 | Yes |
| 557-205 | ST LOUIS | 7218 | 2023-06-01 | Yes |
| 557-206 | ST LOUIS | 7218 | 2023-06-01 | Yes |
| 557-207 | OAKVILLE | 598J | 2023-06-15 | Yes |
| 557-208 | LADUE | 093F | 2023-09-07 | Yes |
| 557-209 | KIRKWOOD | 093F | 2024-02-29 | Yes |
| 557-210 | LADUE | 5814 | 2023-09-21 | Yes |
| 557-211 | XXXXXXXXXX | MULT | — | — |
| 557-212 | MEHLVILLE | 6529 | 2023-09-29 | Yes |
| 557-213 | ST LOUIS | 6534 | 2023-09-29 | Yes |
| 557-214 | ST LOUIS | 6534 | 2023-11-13 | Yes |
| 557-215 | ST LOUIS | 475J | 2023-11-15 | Yes |
| 557-216 | ST LOUIS | 7218 | 2023-06-01 | Yes |
| 557-217 | SAPPINGTON | 6534 | 2023-11-15 | Yes |
| 557-218 | LADUE | 6534 | 2023-12-22 | Yes |
| 557-219 | LADUE | 5814 | 2024-01-18 | Yes |
| 557-220 | CREVECOEUR | 6534 | 2024-01-23 | Yes |
| 557-221 | MEHLVILLE | 093F | 2024-04-10 | Yes |
| 557-222 | ST LOUIS | 616J | 2023-05-04 | Yes |
| 557-223 | LADUE | 5814 | 2024-04-10 | Yes |
| 557-224 | CREVECOEUR | 7218 | 2023-12-15 | Yes |
| 557-225 | LADUE | 6534 | 2024-04-10 | Yes |
| 557-226 | CREVECOEUR | 093F | 2024-06-05 | Yes |
| 557-227 | KIRKWOOD | 6534 | 2024-07-31 | Yes |
| 557-228 | ST LOUIS | 5814 | 2024-11-25 | Yes |
| 557-229 | KIRKWOOD | 6534 | 2024-11-27 | Yes |
| 557-230 | SAPPINGTON | 6534 | 2024-12-30 | Yes |
| 557-231 | ST LOUIS | 7218 | 2025-01-03 | Yes |
| 557-232 | LADUE | 5814 | 2025-02-18 | Yes |
| 557-233 | ST LOUIS | 490J | 2025-02-25 | Yes |
| 557-234 | ST LOUIS | 6534 | 2025-03-13 | Yes |
| 557-235 | KIRKWOOD | 6534 | 2025-03-31 | Yes |
| 557-236 | LADUE | 5814 | 2025-04-24 | Yes |
| 557-237 | LADUE | 6534 | 2025-05-23 | Yes |
| 557-238 | KIRKWOOD | 6534 | 2025-06-20 | Yes |
| 557-239 | ST LOUIS | 5814 | 2025-07-02 | Yes |
| 557-240 | LADUE | 7218 | 2025-09-03 | Yes |
| 557-241 | LADUE | 093F | 2025-09-24 | Yes |
| 557-242 | ST LOUIS | 093F | 2025-09-24 | Yes |
| 557-243 | ST LOUIS | 6534 | 2025-10-09 | Yes |
| 557-244 | KIRKWOOD | 6534 | 2025-10-23 | Yes |
| 557-245 | ST LOUIS | 7218 | 2025-11-12 | Yes |
| 557-246 | ST LOUIS | 700J | 2025-12-03 | Yes |
| 557-247 | MEHLVILLE | 6534 | 2025-12-11 | Yes |
| 557-248 | ST LOUIS | 128L | 2025-12-29 | Yes |
| 557-249 | LADUE | 093F | 2026-01-13 | Yes |
| 557-250 | ST LOUIS | 671J | 2026-02-05 | Yes |
| 557-251 | KIRKWOOD | 6534 | 2026-02-26 | Yes |
| 557-252 | ST LOUIS | 0051 | 2026-05-13 | — |
| 557-253 | KIRKWOOD | 6534 | 2026-05-21 | Yes |
| 557-254 | LADUE | 6534 | 2026-05-27 | Yes |
| 557-255 | LADUE | 093F | 2026-05-29 | Yes |
| 557-256 | MEHLVILLE | 093F | 2026-05-29 | Yes |
| 557-257 | CREVECOEUR | 093F | 2026-07-08 | Yes |
| 557-258 | OAKVILLE | 093F | 2026-07-08 | Yes |
| 557-259 | SAPPINGTON | 093F | 2026-07-08 | Yes |
| 557-260 | LADUE | 5814 | 2026-07-23 | Yes |
| 557-261 | KIRKWOOD | 6534 | 2026-08-13 | Yes |
| 557-262 | ST LOUIS | 6534 | 2026-08-20 | Yes |
| 557-263 | ST LOUIS | 6534 | 2026-08-24 | Yes |
| 557-264 | LADUE | 6534 | 2026-09-09 | Yes |
| 557-273 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-311 | XXXXXXXXXX | MULT | — | — |
| 557-333 | SAPPINGTON | 093F | 2025-07-15 | Yes |
| 557-362 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-411 | XXXXXXXXXX | MULT | — | — |
| 557-444 | CREVECOEUR | 093F | 2025-07-15 | Yes |
| 557-454 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-467 | ST LOUIS | 093F | 2022-08-08 | Yes |
| 557-500 | ST LOUIS | 624H | 2022-08-12 | Yes |
| 557-507 | ST LOUIS | 624H | 2023-08-16 | Yes |
| 557-511 | XXXXXXXXXX | MULT | — | — |
| 557-555 | DIR ASST | MULT | — | — |
| 557-557 | ST LOUIS | 093F | 2023-05-15 | Yes |
| 557-567 | KIRKWOOD | 624H | 2024-11-07 | Yes |
| 557-611 | XXXXXXXXXX | MULT | — | — |
| 557-653 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-700 | — | — | ||
| 557-711 | XXXXXXXXXX | MULT | — | — |
| 557-747 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-777 | CREVECOEUR | 145J | 2022-08-24 | Yes |
| 557-811 | XXXXXXXXXX | MULT | — | — |
| 557-888 | KIRKWOOD | 145J | 2022-09-16 | Yes |
| 557-911 | XXXXXXXXXX | MULT | — | — |
| 557-950 | — | — | ||
| 557-953 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-958 | — | — | ||
| 557-959 | — | — | ||
| 557-976 | — | — | ||
| 557-996 | ST LOUIS | 7218 | 2023-01-25 | Yes |
| 557-999 | SAPPINGTON | 733J | 2022-09-16 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.